NAME
dpkg-deb - Debian package archive (.deb) manipulation tool
SYNOPSIS
dpkg-deb [options] command
DESCRIPTION
dpkg-deb packs, unpacks and provides information about Debian archives.
Use dpkg to install and remove packages from your system.
You can also invoke dpkg-deb by calling dpkg with whatever options you
want to pass to dpkg-deb. dpkg will spot that you wanted dpkg-deb and
run it for you.
COMMANDS
-b, --build directory [archive|directory]
Creates a debian archive from the filesystem tree stored in
directory. directory must have a DEBIAN subdirectory, which
contains the control information files such as the control file
itself. This directory will not appear in the binary package's
filesystem archive, but instead the files in it will be put in
the binary package's control information area.
Unless you specify --nocheck, dpkg-deb will read DEBIAN/control
and parse it. It will check it for syntax errors and other
problems, and display the name of the binary package being
built. dpkg-deb will also check the permissions of the
maintainer scripts and other files found in the DEBIAN control
information directory.
If no archive is specified then dpkg-deb will write the package
into the file directory.deb.
If the archive to be created already exists it will be
overwritten.
If the second argument is a directory then dpkg-deb will write
to the file package_version_arch.deb, or package_version.deb if
no Architecture field is present in the package control file.
When a target directory is specified, rather than a file, the
--nocheck option may not be used (since dpkg-deb needs to read
and parse the package control file to determine which filename
to use).
-I, --info archive [control-file-name...]
Provides information about a binary package archive.
If no control-file-names are specified then it will print a
summary of the contents of the package as well as its control
file.
If any control-file-names are specified then dpkg-deb will print
them in the order they were specified; if any of the components
weren't present it will print an error message to stderr about
each one and exit with status 2.
-W, --show archive
Provides information about a binary package archive in the
format specified by the --showformat argument. The default
format displays the package's name and version on one line,
separated by a tabulator.
-f, --field archive [control-field-name...]
Extracts control file information from a binary package archive.
If no control-file-fields are specified then it will print the
whole control file.
If any are specified then dpkg-deb will print their contents, in
the order in which they appear in the control file. If more than
one control-file-field is specified then dpkg-deb will precede
each with its field name (and a colon and space).
No errors are reported for fields requested but not found.
-c, --contents archive
Lists the contents of the filesystem tree archive portion of the
package archive. It is currently produced in the format
generated by tar's verbose listing.
-x, --extract archive directory
Extracts the filesystem tree from a package archive into the
specified directory.
Note that extracting a package to the root directory will not
result in a correct installation! Use dpkg to install packages.
directory (but not its parents) will be created if necessary,
and its permissions modified to match the contents of the
package.
-X, --vextract archive directory
Is like --extract (-x) but prints a listing of the files
extracted as it goes.
--fsys-tarfile archive
Extracts the filesystem tree data from a binary package and
sends it to standard output in tar format. Together with tar(1)
this can be used to extract a particular file from a package
archive.
-e, --control archive [directory]
Extracts the control information files from a package archive
into the specified directory.
If no directory is specified then a subdirectory DEBIAN in the
current directory is used.
The target directory (but not its parents) will be created if
necessary.
-h, --help
Show the usage message and exit.
--version
Show the version and exit.
OPTIONS
--showformat=format
This option is used to specify the format of the output --show
will produce. The format is a string that will be output for
each package listed.
The string may reference any status field using the "${field-
name}" form, a list of the valid fields can be easily produced
using -I on the same package. A complete explanation of the
formatting options (including escape sequences and field
tabbing) can be found in the explanation of the --showformat
option in dpkg-query(1).
The default for this field is "${Package}\t${Version}\n".
-zcompress_level
Specify which compression level to pass to the compressor
backend program, when building a package.
-Zcompress_type
Specify which compression type to use when building a package.
Allowed values are gzip, xz, bzip2, lzma, and none (default is
gzip).
--new Ensures that dpkg-deb builds a `new' format archive. This is the
default.
--old Forces dpkg-deb to build an `old' format archive. This old
archive format is less easily parsed by non-Debian tools and is
now obsolete; its only use is when building packages to be
parsed by versions of dpkg older than 0.93.76 (September 1995),
which was released as i386 a.out only.
--nocheck
Inhibits dpkg-deb --build's usual checks on the proposed
contents of an archive. You can build any archive you want, no
matter how broken, this way.
-D, --debug
Enables debugging output. This is not very interesting.
ENVIRONMENT
TMPDIR If set, dpkg-deb will use it as the directory in which to create
temporary files and directories.
BUGS
dpkg-deb -I package1.deb package2.deb does the wrong thing.
There is no authentication on .deb files; in fact, there isn't even a
straightforward checksum. (Higher level tools like APT support
authenticating .deb packages retrieved from a given repository, and
most packages nowadays provide an md5sum control file generated by
debian/rules. Though this is not directly supported by the lower level
tools.)
Do not attempt to use just dpkg-deb to install software! You must use
dpkg proper to ensure that all the files are correctly placed and the
package's scripts run and its status and contents recorded.
SEE ALSO
deb(5), deb-control(5), dpkg(1), dselect(1).
AUTHOR
Copyright (C) 1995-1996 Ian Jackson
This is free software; see the GNU General Public Licence version 2 or
later for copying conditions. There is NO WARRANTY.